Shoplifting is a problem
faced by all retailers but, according to experts, shoplifting theft can be
reduced by 60% when using a reliable Electronic Article Surveillance system (EAS). The two most widely used EAS systems are Radio Frequency (RF) and Acousto-magnetic
(AM). The question most business owners ask is “Which security system should I use in my
store?”
I took this question, and
several others, to Julie Mitchell, Merchandising Manager at Specialty Store
Services and all-around knowledgeable and helpful person.
Just how do the RF and AM
systems work?
The RF system works like this: a label or small hard tag –
basically a miniature, disposable electronic circuit and antenna – is attached
to a product and responds to a specific frequency emitted by a transmitter
antenna, usually one pedestal of an entry/exit gate. The response from the
label is then picked up by an adjacent receiver antenna. This processes the
label response signal and will trigger an alarm when it matches specific
criteria. The most popular RF is 8.2MHz.
With the AM system, a transmitter creates a surveillance area where
hard tags and soft labels are detected. The transmitter sends a radio frequency
signal in pulses, which energize the tag in the surveillance zone. When the
pulse ends, the tag responds, emitting a single frequency signal. While the
transmitter is off between pulses, the tag signal is detected by a receiver. If
the correct criteria is met, an alarm occurs.
What are the advantages
and disadvantages of the RF and AM systems?
The RF system is the most widely used system in the United States.
The tags and labels are getting increasingly smaller which is beneficial from a
visual standpoint. The RF system is not as sensitive as the AM system but it is
also less expensive, which makes it an economical choice for small and
mid-level retail stores. However, the tags and labels are slightly more
expensive than AM tags and labels.
The AM system was the first EAS system in the market and is used
in most large high-end retail stores and other large retail, hardware,
appliance and discount stores. The AM system is very sensitive which means that
there are sometimes false alarms. AM tags work well when they are close to
metal and so the AM system works well in stores that use metal shopping carts.
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| Loop tag for sunglasses, purses and shoes |
What type of security
tags or labels are available?
Both security systems use hard security tags
and soft security labels specific to each system, available deactivatable and
non-deactivatable. Soft labels are ideal for use with books, media, and any
merchandise with a hard, flat surface. Hard tags are perfect for use with
clothing. Hard tags are also available as blister pack tags for pegged items,
loop tags for sunglasses and shoes, box wrap alarms and loop bottle tags for
wine and liquor bottles.
How are security tags and labels
deactivated?
Both systems require that
the labels or tags be pressed against or waved over a deactivator pad,
depending on the system and deactivator being used. Non-deactivatable hard tags
must be removed by the store clerk at checkout; however, deactivable hard tags
are also available.
To disarm the RF tag, a radio frequency pulse blasts the tag and burns out the diode so the tag does not emit a signal
and trigger the alarm. When the AM tag is demagnetized, it is deactivated. When
the AM tag is magnetized, it is activated.
Please visit the Specialty Stores Services website to learn more about RF and AM security systems offered.
Do you have questions? Please call the helpful Sales Representatives at
800-999-0771.